SPRINGFIELD – Police said they arrested a knife-brandishing 19-year-old at gunpoint Wednesday morning after he walked into a Liberty Heights convenience store and stuffed bottles of water, Rockstar Energy drinks, Doritos and power bars into his pockets.

Customers inside the Sunoco gasoline station and convenience store fled out the door when the suspect, carrying a knife, entered, Sgt. John M. Delaney said.

When the suspect pulled the knife and thrust it towards the officers and the marshal they drew their firearms and ordered him to drop it, Delaney said, adding that the suspect complied and was arrested.

Carlos Carballo of 40 Cliftwood St. was charged with shoplifting and three counts of assault by means of a dangerous weapon. The incident began about 8:40 a.m.

He is scheduled to be arraigned Thursday in Springfield District Court.